CA6 Contactors A - nhp.com.au · A111 SSNA9000 Contactors A CA6 Discount Schedule A-1 Electrical Data Technical Information CA6 Contactors alues in ( ) represent ratings for AC3 &
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Technical InformationCA6 Contactors
Technical Information
➊ Values in ( ) represent ratings for AC-2 & AC-3 and result in reduced lifespan of 25%. Use 400V values for full life span.
➋ Second number is rating for the “-EI” model.➌ Under test. Contact your Sprecher + Schuh representative.
CA6-115(-EI)
CA6-140(-EI)
CA6-180(-EI)
CA6-210-EI
CA6-250-EI
CA6-300-EI
CA6-420-EI
CA6-630-EI
CA6-860-EI
Rated Insulation Voltage Ui
IEC, AS, BS, SEV, VDE 0660UL; CSA
[V][V]
1000V600V
Rated Voltage Uimp (kV) 12kVRated Voltage Ue - Main ContactsAC 50/60Hz [V] 230, 240, 400, 415, 500, 690, 1000VDC [V] 24, 48, 110, 220, 440VOperating Frequency for AC Loads [Hz] 50/60Hz
➊ Under test. Contact your Sprecher + Schuh representative.➋ Rating CA6-140 / CA6-140-EI.➌ UL Listed Combination. (UL File E41850) Per UL508A, NEC409 and CSA 22.2 No.14 for contactor and
fuses or circuit breaker only.➍ Per IEC 60947-1 for contactor and fuses only.➎ When used as a Branch Circuit Protection device, NEC 430-152 defines the maximum rating of an
Inverse-time circuit breaker to be sized at 250% of the motor nameplate FLA for most applications.
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High Fault Short Circuit Ratings per UL508 and CSA 22.2 No.14
[AWG] 26...14Degree of Protection - contactor IP00 per IEC 60529 and DIN 40 050Type of Protection - with accessoriesSingle contactor cover IP1X per IEC 60529 and DIN 40 050
With main terminal set IP2X per IEC 60529 and DIN 40 050Protection against accidental contact Finger and back-of-hand proof according to VDE 0106, Part 100
Mechanical Data (continued)
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Coil DataCA6- CA6- CA6- CA6-
115…180 115-EI…300-EI 420-EI 630-EI…860-EI
Voltage Range Conventional Coil “EI” Coil “EI” Coil “EI” CoilAC: 50Hz, 60Hz, 50/60 Hz Pickup [x Us] 0.85…1.1 0.85 Us min…1.1 Us max 0.85 Us min…1.1 Us max 0.80 Us min…1.1 Us max
Dropout [x Us] 0.3…0.6 0.3 Us min…0.5 Us max 0.3 Us min…0.5 Us max 0.1 Us min…0.8 Us maxDC Pickup [x Us] 0.85…1.1 0.85 Us min…1.1 Us max 0.85 Us min…1.1 Us max 0.85 Us min…1.1 Us max
Dropout [x Us] 0.30…0.6 0.3 Us min…0.5 Us max 0.3 Us min…0.5 Us max 0.1 Us min…0.8 Us maxCoil ConsumptionAC: 50Hz, 60Hz, 50/60 Hz Pickup [VA/W] 650 / 310 380 / 240 490 / 270 1915 / 1720
Dropout [ms] 6…12 25…110 70…145with RC Suppressor Dropout [ms] 9…18 ~ ~DC Pickup [ms] 27…47 25…50 60…100with Integ. Suppression Dropout [ms] 12…20 35…110 70…145Insulation Class Class “B” according to VDE 0660, Table 22
Technical InformationCA6 Contactors
CA6-EI Application Notes for 24 volt AC/DC Electronic Coils
The CA6-EI 24 VAC or 24 VDC electronic coils are sensitive to voltage drops. These
notes are provided to assist customers in control wiring methods and the selection of
a power supply.
< 10ms Ipeak = 25 amps Start-up peak
< 100ms Imean = 11 amps Pull-in values
> 100ms Ihold = 0.5 amps Average Hold-in values
Circuit operation
• While the electronic coil is switching on, the power supply must deliver a peak of 25
amps. This period will not exceed 10ms.
• During the contactor closing period, the pull-in current of the coil drops to 11 amps.
This period will not exceed 100ms.
• After approximately 80ms the demand of the electronic coil will be reduced to the
holding value; which has an average of 0.5 amps.
Power supply selection
• Use peak value (Ipeak) for the selection of the power supply.
• A regulated power supply is preferred.
• If an unregulated power supply is utilized then the no load value of the power
supply must be less than 28 volts. Additional attention must be given to decrease
the control wire resistance because unregulated power supplies have a high ripple
voltage.
Control Circuit Wiring
To minimize wire resistance see the following:
• The wire gauge (cross-section) must be sufficient to allow a wire resistance of
less than 150 milli-ohms for a regulated power supply and 100 milli-ohms for an
unregulated power supply. For unregulated power supplies, 16 AWG can be used for
runs up to 25 feet (longer for regulated power supply). Consult Sprecher + Schuh
for additional information if longer runs are required.
• Stranded wire should be fitted with ferrules.
• Terminations should be tightened within the recommended torque values.
• If multiple CA6-EI contactors are used in the control circuit, the electronic coil
terminations should be fed directly from the power supply (home runs). Do NOT
parallel (jumper) multiple coil terminations. Switching of the home runs must be
accomplished through separate (individual) contacts of a control relay or control
device.
A Recommendation
A CA6 contactor used in the “EI” mode removes the burden of the coil from the 24
VDC power supply. The integrated electronic interface allows line voltage, or at least a
higher AC voltage (i.e., 120V), to be applied to coil terminals A1 – A2, while the 24 VDC
low level milli-ampere signal switches the B1 – B2 interface. The “EI” mode (method)
has significant advantages over direct coil switching at 24 VDC. See the description of
operation on the next page.
➊ Customers with 24 VDC applications should strongly consider using the “EI” functionality of the CA6 (see pages A121-122).➋ Conventional DC coils are Two-Winding Coils. See page A122.
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Technical InformationCA6 Contactors
CA6-EI contactors are supplied with an electronically controlled mechanism, which has an integrated electronic interface that consists of the following main parts:
• The coil bobbin rated for the control voltage.• A printed circuit board with components for control and
interface functions which is matched to the coil and rated for the control voltage.
• An interconnecting printed circuit board with coil termi-nals, which is located in the contactor base.
• R/C transient surge suppressors which are installed on the printed circuit board.
The CA6-EI coil bobbin and printed circuit board are a matched set; therefore, both must be changed when replac-ing the coil or changing out the coil to a different voltage. All replacement coils include both the coil bobbin and printed circuit board.
CommissioningThe CA6-EI contactor is operated in either the “E” mode (normal operation) or the “EI” mode (electronic interface operation) and is programmed by an orange “jumper” located on the bottom side of the contactor (opposite the coil terminals). This orange jumper is directly underneath main terminal T2 and is exposed by removing the small plastic cover that shields the mating space for the CRC/CRV protec-tion element.
CA6 Electronic Coils (CA6-115-EI…CA6-860-EI)
Electronic Operation – “E” ModeFor the “E” mode (factory default setting), the contactor is connected and controlled using terminals A1 & A2 in the same manner as a traditional contactor with an electromechanical coil mechanism. The contactor is programmed from the factory in the “E” mode by means of the orange jumper in the position as shown in Detail A. The “E” mode (or electronic mode) provides electronic control of the coil mechanism, but does not allow coil energizing from a low level signal source such as a PLC.
Electronic Interface Operation – “EI” ModeFor the “EI” mode, or optional electronic interface setting, the contactor can be switched from a PLC or other low-level signal source (13…30.2 VDC) without the need for an interposing relay. The contactor is programmed for the “EI” mode by moving the orange jumper to the position as shown in Detail B.
In the “EI” mode, the control voltage (VAC or VDC) must be perma-nently switched on to terminals A1 & A2 while in operation. The control signal from the PLC or other low-level signal source must be applied to terminals B1 & B2 (orange terminals) of the electronic interface in order to energize the contactor. The current burden of the interface is 15mA maximum.
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Technical InformationCA6 Contactors
CA6 Conventional DC Coil (CA6-115…CA6-180)
Conventional 3-lead DC Coil
Notes1) The CA6 conventional DC coil has dual windings with three leads brought out.
One winding is the “pick-up” winding and the other is the “holding” winding. The coil also has a built-in voltage limiting varistor (Z1).
2) The pick-up winding has low resistance while the holding winding has a higher resistance.
3) When the control circuit is energized, the contactor “pulls-in” through the lower resistance pick-up winding and the NC late break auxiliary contact. After the contactor seals in, the late break contact opens and the contactor is held in through the holding winding.
4) The pick-up winding is not designed for continuous operation and must be dis-connected by the “late break” contact immediately after the contactor pulls-in.
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Environmental and General Specifications
Technical InformationCA6 Contactors
Contact Ratings (Per UL508/NEMA A600 & Q600)
CA6-115(-EI)
CA6-140(-EI)
CA6-180(-EI)
CA6-210-EI
CA6-250-EI
CA6-300-EI
CA6-420-EI
CA6-630-EI
CA6-860-EI
Ambient TemperatureStorage -55...+80˚C (-67...176˚ F)Operation at rated current -25...+60˚C (-13...140˚ F)Conditioned 15% current reduction -70˚ C (158˚ F)
Altitude at installed site 2000 meters above sea level per IEC 60947-1Resistance to Corrosion / Humidity Damp-alternating climate: cyclic to IEC 68-2, 56 cycles.
Type 2 Coordination [A] 16 0.1Rated Impulse Voltage Uimp [kV] 8 1.5Load carrying capacity per UL/CSA
Rated Voltage [V] 600 max. 250V max.Continuous Rating [A] 10 general purposeSwitching Capacity Heavy pilot duty (A600) 0.1ARated Voltage [V} 600 max.Switching Capacity Standard pilot duty (P600)Minimum Switching Capacity 17V, 10mA 17V, 5mA
TerminalsTerminal Type
1...2.5 1...2.5Maximum Wire Size per IEC 947-1 1...2.5 1...2.5
Flexible with Wire-End Ferrule
1 Conductor2 Conductor
[mm2][mm2]
1...4 1...4
Solid/Stranded-Conductor
1 Conductor2 Conductor
[mm2][mm2]
1...4 1...4
Recommended Tightening Torque [Nm] 1.4...2.3 1.4...2.3Max. Wire Size per UL/CSA [AWG] 16...12 16...12Recommended Tightening Torque [lb-in] 12...20 12...20Degree of Protection IP2X per IEC 529 and DIN 40 050
Standard Circuit Voltage Make (Amps/VA) Break (Amps/VA) Continuous Amps
A600
120AC240AC480AC650AC
60A/7200VA30A/7200VA15A/7200VA12A/7200VA
6A/720VA3A/720VA1.5/720VA1.2/720VA
10
Q600125DC250DC600AC
0.55/69VA0.27A/69VA0.1A/69VA
0.55A/69VA0.27A/69VA0.1A/69VA
2.5
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Technical InformationCA6 Contactors - Contact Life
Life-Load Curves
AC-1 / AC-3
AC-4
NOTE: The life-load curves shown here are based on Sprecher+Schuh tests according to the requirements defined in IEC 947-4-1. Since contact life in any given application is dependent on environmental conditions and duty cycle, actual application contact life may vary from that indicated by the curves shown here.
AC-4 / Starting with inching and plugging; Ue= 400 VAC
AC-4
INSTRUCTIONS ON “hOW TO READ”
LIfE CURvES CAN bE fOUND ON PAGE A7
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Technical InformationCA6 Contactors - Contact Life
Life-Load Curves
AC-3 (90%),AC-4 (10%)
NOTE: The life-load curves shown here are based on Sprecher+Schuh tests according to the requirements defined in IEC 947-4-1. Since contact life in any given application is dependent on environmental conditions and duty cycle, actual application contact life may vary from that indicated by the curves shown here.
Contact Life for Mixed Utilization CategoriesAC-3 and AC-4In many applications, the utilization category cannot be defined as either purely AC-3 or AC-4. In those applications, the electrical life of the contactor can be estimated with the following equation:
Lmixed = Lac3/ [1+Pac4 x (Lac3/Lac4-1)], where:
Lmixed Approximate contact life in operations for a mixedAC-3/AC-4 utilization category application.
Lac3 Approximate contact life in operations for a pure AC-3 utilization category (from the AC-3 life-load curve).
Lac4 Approximate contact life in operations for a pure AC-4 utilization category (from the AC-4 life-load curve).
Pac4 Percentage of AC-4 operations
0.1
1
10
10 100 1000
Con
tact
Life
(Mill
ions
of O
pera
tions
)Mixed operation of squirrel-cage motors; Ue = 400 VAC AC-3 90% Starting and stopping of running motors
Squirrel cage motors; starting, switching off during running; Ue = 400 VAC
Rated operational current Ie [A]
CA6-115(-EI) CA6-180(-EI)
Max
. Ope
ratin
g R
ate
[Ops
/hr]
250ms start time; 40% duty cycle
CA6-140(-EI)
AC-3
10 100 100010
100
1000
5000
Squirrel cage motors; starting, switching off during running; Ue = 400 VAC
Rated operational current Ie [A]
CA6-180(-EI)Max
. Ope
ratin
g R
ate
[Ops
/hr]
1s start time; 40% duty cycle
CA6-140(-EI)
AC-3
CA6-115(-EI)
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DimensionsCA6 Contactors
d2a c
e1
e2 c1
øe
➊
bd1 e3e4
ød
e3
➊ No change of base dimensions with 1 or 2 auxiliary contact blocks (S1 or S2). Each dimension increased by 13.5 mm to the “a” dimesions on the right hand side.
115°
25°
90° 90°
Catalog Number a b c c1 d d1 d2 e e1 e2 e3 e4
CA6-115(-EI);CA6-140(-EI); CA(N)6-180(-EI);
120(4-3/4)
170(6-11/16)
156(6-1/8)
110.5(4-11/32)
5.2(7/32)
145(5-11/16)
100(3-15/16)
M8 20(13/16)
39(1-35/64)
160(6-19//64)
10(25/64)
CA6-210-EI…CA6-250-EICA(N)6-300(-EI); CA6-420-EI
155(6-1/8)
222(8-23/32)
180(7-3/32)
110.5(4-11/32)
6.5(9/32)
180(7-3/32)
130(5-1/8)
M10 25(1)
48(1-7/8)
193(7-19/32)
12.5(31/64)
CA6-630-EI…CA6-860-EI 255(10-3/64)
337(11-1/4)
265(10-7/16)
110.5(4-11/32)
10(25/64)
230(9-1/16)
225(8-55/64)
M12 40(1-37/64)
70(2-3/4)
291(11-29/64)
22(55/64)
Series CA6 & Series CAU6 (Contactors & Reversing Contactors)